Space Capstone Crossword

12345678910111213141516171819
Across
  1. 5. the force that binds one object to another
  2. 6. an idea that placed Earth at the center of the solar system instead of the Sun
  3. 7. an idea that places the Sun at the center of the solar system
  4. 9. the study of space
  5. 11. a system composed the interplanetary medium, dark matter, and celestial bodies
  6. 12. the total amount of matter in an object
  7. 14. one of the four periods on Earth that begins with a solstice or equinox and usually has different weather
  8. 16. all the contents of space, time, matter, stars, and other cosmic objects
  9. 18. the movement of an object as it pivots about an axis
  10. 19. a torus-shaped region of asteroids that divide the inner and outer planets
Down
  1. 1. an imaginary line that runs down the center of an object to depict its center of rotation
  2. 2. the phase of the Moon where the illuminated part that faces Earth gets smaller
  3. 3. elliptical, spiral, and irregular
  4. 4. the mission where Neil Armstrong and Buzz Aldrin first landed on the Moon
  5. 8. the natural satellite of the Earth that takes about a month to orbit Earth
  6. 10. the rising and falling of the sea due to the gravitational attraction of the planets
  7. 13. the measure of the force of gravity on an object
  8. 14. a method of reducing measurements to achieve the same proportions as the scale model
  9. 15. the distance that light travels in a year
  10. 17. an optical instrument that allows distant objects to appear brighter and clearer